Linkworld Electronic LLC. Micro-ATX Mini Tower LC727-19 Cases (7270-19C2122U) Security Rings & Kensington Security Slot Flip Doors on 5.25-Inch Drive Bay 2 Front USB 2.0/ HD Audio Jack /TAC2.0 Chassis Support Standard Micro-ATX Motherboard Size 4 Rear PCI/AGP Expansion Slots Optional System Fan Rear: 80MM OR 90MM ROHS Compliance